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Practice Area
Trial skills matter—even in a world where few disputes ever see the inside of a courtroom. Winston has built a reputation as a trial lawyers’ firm, featuring seasoned litigators who leverage extensive courtroom experience to meet our clients’ business and legal objectives. Our long history of taking cases to trial—and winning—provides our clients with tremendous settlement leverage with their adversaries, as well as a substantial likelihood of a favorable resolution if, and when, they go to trial.
Practice Area
Our nationally recognized Appellate & Critical Motions (ACM) Practice delivers sophisticated legal advocacy and analysis before trial, at trial, and on appeal. From state trial courts to the U.S. Supreme Court, our ACM attorneys identify, preserve, and present the critical legal issues that can make the difference between winning and losing.
Practice Area
Our Patent Litigation Practice is one of the country’s most active and highly regarded. Our seasoned patent litigators bring extensive courtroom experience to every matter we handle. According to Lex Machina, we are among the top three national patent defense firms in the country for number of appearances and cases filed, and we also were the top national defense firm for number of patent trials in the last five years (2018–2022).
Experience 31 results
Experience
|September 8, 2025
Winston represents a class of professional swimmers alleging World Aquatics (WA) violated antitrust laws by blocking their participation in the competing International Swimming League. After WA won summary judgment, Winston successfully appealed, arguing the court applied improper antitrust standards and wrongly denied certification of a damages class. In September 2024, the Ninth Circuit reversed both rulings, reviving all claims and issuing a landmark ruling on the possible application of the per se rule or quick look review to sports-associations rules. Am Law awarded Winston “Litigator of the Week” Runner-Up recognition for the win. In November 2024, the Ninth Circuit denied rehearing. In April 2025, the district court certified a damages class.
Experience
|July 30, 2025
Represent Norman W. Fries, Inc. d/b/a Claxton Poultry Farms in a series of 15+ antitrust class actions consolidated in the Northern District of Illinois and brought by plaintiffs who allege that Claxton and the nation’s other largest poultry producers conspired to fix the price of broiler chickens in a scheme from 2008 to 2016 that raised the price for broiler chickens by artificially reducing supply.
Experience
|March 31, 2025
After an eleven-day bench trial in January 2023, the N.D. Ill. delivered a full defense verdict in March 2025 in an ERISA class action brought by participants in Segerdahl Corporation’s ESOP. The court rejected the class claims against Segerdahl, its ESOP trustee GreatBanc Trust Company, and various individual defendants including board members Bob Cronin, Rod Goldstein, and Peter Mason, alleging that Segerdahl could have sold for a significantly higher price, which would have increased post-sale distributions to the ESOP participants. Winston earned an Am Law Litigator of the Week Shout Out for this win.
Insights & News 2,097 results
Recognitions
|December 19, 2025
|1 Min Read
Winston Team Named The American Lawyer’s Litigator of the Week
Winston & Strawn partners Jeffrey Kessler, Jeanifer Parsigian, and Danielle Williams were named as Litigators of the Week by The American Lawyer in their December 19, 2025, column.
In the Media
|December 15, 2025
|Less Than 1 Min Read
Winston & Strawn was recently featured in a Financial Times article examining the excessive use of solitary confinement in U.S. prisons. The article spotlighted Winston’s nearly decade-long commitment to prison reform through a major pro bono class action in Illinois. The firm concluded a bench trial in October in a pro bono class action representing all 28,000 prisoners in the state, hundreds of whom have endured solitary confinement for years.
Press Release
|December 15, 2025
|3 Min Read
Winston & Strawn and Taylor Wessing UK to Combine, Creating a Premier Transatlantic Law Firm
Winston Taylor to build on shared vision and culture in establishing a transatlantic powerhouse for major litigation, critical transactions, strategic IP, and private wealth
Other Results 32 results
Law Glossary
What Is the Patent Trial and Appeal Board?
The Patent Trial and Appeal Board (PTAB) is a tribunal within U.S. Patent and Trademark Office. The PTAB oversees trial proceedings, namely: inter partes review (IPR), post-grant review (PGR), covered business method (CBM) review, and derivation proceedings. The Board also hears appeals from adverse patentability decisions by patent examiners in original applications, reissues, and reexaminations. And, while phasing out since the passage of the America Invents Act (AIA) in 2011, the PTAB is also responsible for deciding interferences. The PTAB was previously referred to as the Board of Patent Appeals and Interferences and was renamed by the AIA.
Law Glossary
What Is an Inter Partes Review (IPR)?
An inter partes review of a patent is a type of administrative trial proceeding. Inter partes review became available in 2012 and replaced inter partes reexamination as a way to challenge patentability at the Patent Office. Any person who is not the owner of a patent can file a petition for a review of a patent. The Patent Trial and Appeal Board (PTAB) will act on the petition either instituting a trial or denying institution of a trial. This will occur a little over six months after the petition is filed. If trial is instituted, the proceeding will, with some limited exceptions, be resolved within one year.
Site Content
What Is a Temporary Restraining Order (TRO)?
A temporary restraining order (TRO) is a legal document issued by a judge before trial that forces or prevents an action for a specified time frame. During court cases that involve trademark infringement or the use of a trade secret, a TRO can halt patent, copyright, or trademark infringement in the short term. It can offer relief in various situations, such as to prevent the sharing of a business secret or an unfair competition practice, until a court hearing on a preliminary injunction can be held. A TRO petition is an emergency request for a state or federal court to take immediate action based on submitted evidence.